diff --git a/include/linux/fanotify.h b/include/linux/fanotify.h
index bdbf9bb29b54535cd565bf162b57097c0de1a51a..c73224315aee6fc92a26268172a9d4fcab5a01a2 100644
--- a/include/linux/fanotify.h
+++ b/include/linux/fanotify.h
@@ -101,6 +101,8 @@ struct fanotify_response {
 /* Legit userspace responses to a _PERM event */
 #define FAN_ALLOW	0x01
 #define FAN_DENY	0x02
+/* No fd set in event */
+#define FAN_NOFD	-1
 
 /* Helper functions to deal with fanotify_event_metadata buffers */
 #define FAN_EVENT_METADATA_LEN (sizeof(struct fanotify_event_metadata))